Detergent tablet



FIG. 1 is a top view of a detergent tablet showing the new design;

FIG. 2 is a side view thereof all sides appearing the same; and,

FIG. 3 is a perspective view thereof.

The stippling in the drawings is representative of color contrast, not pattern. The surface(s) or portion(s) of the article not shown in the drawing or described in the specification form(s) no part of the claimed design. 

The ornamental design for a detergent tablet, as shown and described. 